Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
The main navigation is using JS, will this have a negative impact on SEO?
-
Hi mozzers,
We just redesigned our homepage and discovered that our main nav is using JS and when disabling JS, no main nav links was showing up. Is this still considered bad practice for SEO? https://cl.ly/14ccf2509478
thanks
-
Thanks Jose!
-
Googlebot does not render JavaScript
We hear very often about JavaScript rendering is the assumption that the crawler is responsible for the rendering. But that's not the case. The rendering is done by the indexer (from Google Caffeine).More specifically, the Web Rendering Service (WRS), which is part of Google Caffeine. And this is exactly where the second great difficulty lies in the area of JavaScript SEO.
Gary Illyes says: "Also, to clarify, WRS is a subsystem of Caffeine, just like the PageRanker (cos yes, we still use it) or the canonicalization algorithm."
The process flow between the crawler and the indexer:
HTML files are downloaded.
CSS and JavaScript data will be downloaded in parallel.
WRS (Web Rendering Service) (part of Google Caffeine) is used to run JS.
WRS renders all files.
Now Google Caffeine can index the content if necessary.
And that's when Googlebot can crawl new links.
Why is that a problem? For the crawler to be able to enter the content and follow the links, it must first pass the data to the indexer. The indexer renders the content and returns it to the crawlers. Only now can the crawler see the content and follow the links. On the next page, the game starts again. Page by page. (many processes)Unlike conventional pages, where the crawler crawls numerous pages and, after crawling, passes everything collectively to the indexer. (few processes)
This process presents another challenge to search engines.
Regards
-
The only bad SEO Practice regarding JS that I've of is trying to hide the JS files from Search Engines, apparently, Google needs to render a whole page as it indexing it; so blocking any JS (& CSS for that matter) isn't a good thing.
-
Hi There,
JS rendered UI isn't negative, it is however not a good practice also.
You can find complete information to the concept of JS rendered pages and UI on this link, https://www.portent.com/blog/seo/javascript-bad-for-seo.htm .
I hope this helps.
Regards,
Vijay
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Will changing category URLs on site hurt SEO?
Hi Moz Community, We're looking to replace some URLs on our Wordpress site and I want to make sure we won't hurt our SEO with the changes. The site is lushpalm.com When we originally launched our site we created pages (which are linked to in our main menu) to essentially display our categories. We did this as a workaround because we didn’t like the URL to have the word “category” in it. Now we would like to make some changes and we want to make sure we’re not going to hurt our SEO in any way by accidentally duplicating content or otherwise. We want to fix our structure and now link to our category pages from our main menu, BUT we want to change the URL of the category page so that it doesn’t have “category” in it, essentially renaming it the name of the page currently linked to in our main menu. So basically, the category lushpalm.com/category/surf-trips, would be renamed with the URL lushpalm.com/surf-trips and the current page that is at lushpalm.com/surf-trips would be therefore replaced. My questions are: If we did this, would that mean that the previous “lushpalm.com/category/surf-trips” would cease to exist? Or is there some imprint of that out on the web? And if it is then would it re-direct to the new page? Would replacing the current page URL with a category hurt our current SEO in any way? Would this change cause any duplicate pages somehow? Thanks so much for your help!
Intermediate & Advanced SEO | | TaraLP1 -
How to remove skip links, main navigation, sidebars as h2 tags in wordpress genesis
Our website CMS is wordpress. Due to the Genesis Framework; below 4 phrases tuned into h2 tags: Skip links, Header Right, Main navigation and Footer. How to remove these?
Intermediate & Advanced SEO | | vtmoz0 -
Having 2 brands with the same content - will this work from an SEO perspective
Hi All, I would love if someone could help and provide some insights on this. We're a financial institution and have a set of products that we offer. We have recently joined with another brand and will now be offering all our products to their customers. What we are looking to do is have 1 site that masks the content for both sites so it appears as there are 2 seperate brands with different content - in fact we have a main site and then a sister brand that offers the same products. Is there anyway to do this so when someone searches for Credit Card from Brand A it is indexed under Brand A and same when someone searched for Credit Card from Brand B it is indexed under Brand B. The one thing is we would not want to rel:can the pages nor be penalised by googles latest PR algorithm. Hope someone can help! Thanks Dave
Intermediate & Advanced SEO | | CFCU1 -
SEO Impact of External links in JS tag
We have our JS tag and iframe tag being used over by 100 leading websites. What would be the SEO impact if we added a follow link in the iframe. Would it have any negative impact ? Vivek
Intermediate & Advanced SEO | | kvivek050 -
SEO site Review
Does anyone have suggestions on places that provide in depth site / analytics reviews for SEO?
Intermediate & Advanced SEO | | Gordian0 -
Is Using a Question, Answer Format Appropriate for a Blog? Is a 300 Word Micro Blog An SEO Plus?
My PR agency has suggested a question answer format be incorporated in my blog. They suggest a microblog with a single sentence question and an answer of about 300 words. My blog currently has about 35 posts. I would like to ramp up blog entries to about one or two per week of these "mini blog" posts. The format of the new blog begins as a question with the responses being paragraphs that do not use headings. My concerns are as follows: 1. No headings in an answer of 300 words will fail to provide Google with context regarding the content's meaning. Everything I have read about SEO suggests text be broken up in short sections and that it be divided by headings (preferably H2s). I very much like my agency's concept for a question answer format blog. It provides very practical info for visitors. How can I use it in a manner that supports SEO best practices? 2. According to a reputable SEO firm that has been assisting me, Google does not consider a blog post of less than 600 words to be superior quality. They told me that blog posts of 300 words, from an SEO purpose will not be a great helpful, that the content will not be rich enough to generate incoming links. Is this really the case? What if this abbreviated content is very well written and engaging? If so, is 300 words sufficient? From the visitor's perspective I am not sure they would have the patience to read 600 words when 300 words is more than than enough to answer these basic questions. From a PR perspective I think the shorter content in a question answer format is superior at least for my line of business (commercial real estate brokerage). 3. If 500-600 words is the minimum word count, and headings are necessary, what is the best way to execute a question and answer blog format? The purpose of this blog is to provide very useful info to my visitors while generating incoming links to that will boast my rankings. Thanks in advance for your feedback!!! Alan
Intermediate & Advanced SEO | | Kingalan10 -
Meta Keywords: Should we use them or not?
I am working through our site and see that meta keywords are being used heavily and unnecessarily. Each of our info pages will have 2 or 3 keyword phrases built into them. Should we just duplicate the keyword phrases into the meta keyword field, should put in additional keywords beyond or not use it at all? Thoughts and opinions appreciated
Intermediate & Advanced SEO | | Towelsrus1 -
Is DOCTYPE important for SEO?
Hello fellow Mozzers. I am just having a brief look at a potential clients website before speaking to them tomorrow and whilst looking at the source I noticed that they don't appear to have a clear definition for their Doctype. All the have at the top of each page is I have to admit that Doctypes aren't my strong point but I know that they are normally slightly more descriptive than this. Can this have any effect on rankings? or is this just an issue for W3C validation? Thanks 🙂
Intermediate & Advanced SEO | | AdeLewis0